Lathe-dog and the like



C. A. DIES.

LATHE DOG AND THE LIKE I APPLICATION FILED APR-I9. 1sfs.-

I 1,333,707. Pat ntedMa 16,-1920.

I j shaped body member. of the lathe-dom And V Lathe-Dogs and the like,

' lowing is a specification.

LATHE-DOG AND inn-Like;

To all'whom'z'tmag concern: 7 f

Bev it known that I, CHARLES, A. Dms a citizen of the'United' States ofAmerica; and a resident of Chicago, in thecou'nty of Cook, State ofIllinois, have invented cer tain new and useful Improvements in ofwhichthe 01- This invention relates to lathe-dogs and the like, in which aradially moving 'and;

screw impelled jaw is adapted to engage and hold cylindrical -workwithin the ring the present improvement has for its object to provide asimpleand eflicient structural forh mation and association of alathe-dogparts, whereby dangerous projections on the exterior of thelathe-dog is avoided and 1 strong and substantialjawiactuating -mech-ftive of the adjusting means of the tool.

anism provided, all as'will hereinafter'more fully appear; a I o p f Inthe accompanying drawings: ,7

Figure 1, is an elevation of a'lathedog embodying the present invention.v Fig. 2, is a sectional elevation in perspec- Fig. 3, is a detailperspective view ofthe holding plate member. V l

Similar reference numerals indicate like parts in the severalviews.Referring. to the drawing, 1 represents the main body of'the lathe-doghaving the usual IOViLlI'lIIg form shown, and provided at one Q end witha laterally extending prong 2 vbe described.- 45,

in the aforesaid circularbore of the tubular enlargement?) of thelathe-dog body,and

adapted for operative engagement with the" face plate or other like partofalathe, At

the end opposite to the one carrying the prong 2, said main body 1 isformed'with a tubular enlargement 3, the cylindrical bore of which isdisposed radially tothe center of the work receiving opening ofthe lathe7 dog, asshown, and, adaptedto contain the movable jaw actuating'rnechanism now to 4 designates an operating sleeve arranged having atits innerend an external annular abutment flange or collar 5, adaptedtobear against the inner end of said tubular en- 7 largement 3, asshown. At its outer end, the operating sleeve 4 is formed with a- Y 7square or like non-circular recess or orifice 6,

Specification of Letters Patent." Patented Application fi1ed Ap'ri119,1919., Seria1No.291 205 i p a j aw member.

" for operative engagement with asuita'ble hand wrench, by whichforcible adjustment Mar. 16, 1920.

of the parts; is effected. Between said orifice 6 and thelnner end ofthe sleeve 4, the bore thereof is screw-threaded for operativeengagement with the radially the lathe-dog nowto be described.

moving jaw of r The radially moving j aw above referred r to, comprisesan outer cylindrical. screw- 7 threaded head 7 having operative engage-1 m'ent wlthothe screw-threaded bore of the sleeve 4, aforesaid,and asquare or'like' non cross-sectional area than that of the head '2'.

In the present construction the non-circular a shank port1on8 hasmovement n: a corre v spondingly' formed orifice in a plate membercircular inner shank portion 8, of a less) 9 disposed at the innerend ofthe operating sleeve 4, aforesaid, and fixedly held b the main body 1 ofthe lathe-dog, as shown.

VViththe aboveidescribed construction at '7 rotation of the operatingsleeve is adapted toimpart radial movement to the gripping jaw 7, 8,aforesaid, in that the shank 8 of said jaw is held from rotation withsaid sleeve 4, and abutting against the main body sleeve 4, by theholding plate 9, aforesaid 10 designates a milled collar, having a drivefit on the outer end of the operating l of the lathe-dog, to hold saidopera-ting.

sleeve inplace. In addition, said collar pr vldes means for an 1n1t1aloperation of the] i parts byv the fingers of the operator in applyingthe lathe-dog'to the work, and in a final operation of removing thelathe-dog,

from said-work. r 7 Y Having thus fully described my, said in- 'vention'what I claim as new and desire :to

secure by Letters Patent, is

' 1.111 a toolof the type described and in V p which any operatingsleeve is revolubly- ,mounted' in the tool body'and' isform'ed withacscrew-threaded bore, the combination of'a non-revoluble jaw memberformedwith a non-circular shank and an enlarged screwthreadedend-portion engaging the bore of said operatin sleeve,"and a separateplate member attached to the tool body at an end of the operating sleeveand j'having a noncircular guideorifice for the. shankof the In a toolof the type described and in which an operating sleeve is. revolublycmounted in theiool body and is formed with a screw-threaded: borezindjwvith fixed abutment collars at each end, the eombination of anon-revoiuble jaw member formed. with -21 non-circular shank 411d anenlarged screw-threaded end portion engaging the bore-of said operatingsleeve,' and a sepa V of the jaw member.

rateplate member attached to the tool body at an end of the operating"sleeve and having a non-circu1ar guide orifice for the shank 10 Signedat Chicago,

Illinois, this 12th day of April, 1919.

CHARLES A. DIES.

